MetLife - The life insurance company posted earnings of $1.32 a share on sales of $16.5 billion. Analysts expected the company to post earnings of $1.28 a share on revenue of $17.10 billion. Shares slipped in extended-hours trading. (Click here for after-hours quote.)

Zillow - The online real estate database has acquired Buyfolio, an online and mobile platform for users to search and discuss listings with real estate agents. Financial terms were not disclosed. (Click here for after-hours quote.)

BMC Software - The tech company posted earnings of 88 cents a share excluding one-time items, matching expectations, but sales were slightly short of estimates. Meanwhile, the company said it expects full-year 2013 earnings to be slightly better than expectations, sending shares higher in extended-hours trading. (Click here for after-hours quote.)